On Tue, 20 Aug 2013 10:40:03 +0800 Chen Gang <gang.c...@asianux.com> wrote:
> The member variable 'delays' may be NULL, so need check NULL before use > it for all extern functions, just like __delayacct_tsk_init() and > __delayacct_add_tsk() have already done. If task.delays is NULL, the kernel will oops. I don't recall seeing such oops reports hence I suspect that you missed some check somewhere. For example, delayacct_blkio_start() checks current->delays before calling __delayacct_blkio_start(), so why retest current->delays in __delayacct_blkio_start()? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/